25 blocks, with wood featuring five transparent colours, are a great light panel resource for discovering light and colour. When looking through the windows by hand, the world is multiplied with a kaleidoscope effect and very exciting.
From Germany's Bauspiel.
Note that the acrylic windows are kept in place with pegs
Measurement:25 pieces 5cm x 5xm x 2.5cm, frame is 28.5 x 28.5 x 2.5cm